1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_VCL_INC_FONTINSTANCE_HXX
#define INCLUDED_VCL_INC_FONTINSTANCE_HXX
#include "fontselect.hxx"
#include "impfontmetricdata.hxx"
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <rtl/ref.hxx>
#include <salhelper/simplereferenceobject.hxx>
#include <tools/gen.hxx>
#include <tools/fontenum.hxx>
#include <vcl/glyphitem.hxx>
#include <unordered_map>
#include <memory>
#include <hb.h>
class ConvertChar;
class ImplFontCache;
class PhysicalFontFace;
// TODO: allow sharing of metrics for related fonts
class VCL_PLUGIN_PUBLIC LogicalFontInstance : public salhelper::SimpleReferenceObject
{
// just declaring the factory function doesn't work AKA
// friend LogicalFontInstance* PhysicalFontFace::CreateFontInstance(const FontSelectPattern&) const;
friend class PhysicalFontFace;
friend class ImplFontCache;
public: // TODO: make data members private
virtual ~LogicalFontInstance() override;
ImplFontMetricDataRef mxFontMetric; // Font attributes
const ConvertChar* mpConversion; // used e.g. for StarBats->StarSymbol
long mnLineHeight;
short mnOwnOrientation; // text angle if lower layers don't rotate text themselves
short mnOrientation; // text angle in 3600 system
bool mbInit; // true if maFontMetric member is valid
void AddFallbackForUnicode( sal_UCS4, FontWeight eWeight, const OUString& rFontName );
bool GetFallbackForUnicode( sal_UCS4, FontWeight eWeight, OUString* pFontName ) const;
void IgnoreFallbackForUnicode( sal_UCS4, FontWeight eWeight, const OUString& rFontName );
inline hb_font_t* GetHbFont();
void SetAverageWidthFactor(double nFactor) { m_nAveWidthFactor = std::abs(nFactor); }
double GetAverageWidthFactor() const { return m_nAveWidthFactor; }
const FontSelectPattern& GetFontSelectPattern() const { return m_aFontSelData; }
const PhysicalFontFace* GetFontFace() const { return m_pFontFace.get(); }
const ImplFontCache* GetFontCache() const { return mpFontCache; }
bool GetGlyphBoundRect(sal_GlyphId, tools::Rectangle&, bool) const;
virtual bool GetGlyphOutline(sal_GlyphId, basegfx::B2DPolyPolygon&, bool) const = 0;
int GetKashidaWidth();
void GetScale(double* nXScale, double* nYScale);
static inline void DecodeOpenTypeTag(const uint32_t nTableTag, char* pTagName);
protected:
explicit LogicalFontInstance(const PhysicalFontFace&, const FontSelectPattern&);
virtual bool ImplGetGlyphBoundRect(sal_GlyphId, tools::Rectangle&, bool) const = 0;
// Takes ownership of pHbFace.
static hb_font_t* InitHbFont(hb_face_t* pHbFace);
virtual hb_font_t* ImplInitHbFont() { assert(false); return nullptr; }
inline void ReleaseHbFont();
private:
// cache of Unicode characters and replacement font names
// TODO: a fallback map can be shared with many other ImplFontEntries
// TODO: at least the ones which just differ in orientation, stretching or height
typedef ::std::unordered_map< ::std::pair<sal_UCS4,FontWeight>, OUString > UnicodeFallbackList;
std::unique_ptr<UnicodeFallbackList> mpUnicodeFallbackList;
mutable ImplFontCache * mpFontCache;
const FontSelectPattern m_aFontSelData;
hb_font_t* m_pHbFont;
double m_nAveWidthFactor;
rtl::Reference<PhysicalFontFace> m_pFontFace;
};
inline hb_font_t* LogicalFontInstance::GetHbFont()
{
if (!m_pHbFont)
m_pHbFont = ImplInitHbFont();
return m_pHbFont;
}
inline void LogicalFontInstance::ReleaseHbFont()
{
if (!m_pHbFont)
return;
hb_font_destroy(m_pHbFont);
m_pHbFont = nullptr;
}
inline void LogicalFontInstance::DecodeOpenTypeTag(const uint32_t nTableTag, char* pTagName)
{
pTagName[0] = static_cast<char>(nTableTag >> 24);
pTagName[1] = static_cast<char>(nTableTag >> 16);
pTagName[2] = static_cast<char>(nTableTag >> 8);
pTagName[3] = static_cast<char>(nTableTag);
pTagName[4] = 0;
}
#endif // INCLUDED_VCL_INC_FONTINSTANCE_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
